CN109421650B

CN109421650B - Airbag for a vehicle and associated vehicle

Info

Publication number: CN109421650B
Application number: CN201711268701.3A
Authority: CN
Inventors: 权赫寅
Original assignee: Hyundai Motor Co; Kia Motors Corp
Current assignee: Hyundai Motor Co; Kia Corp
Priority date: 2017-08-18
Filing date: 2017-12-05
Publication date: 2022-11-15
Anticipated expiration: 2037-12-05
Also published as: KR102530685B1; JP2019034710A; DE102017221442A1; US20190054890A1; JP6907103B2; KR20190020254A; US10543801B2; CN109421650A

Abstract

An airbag for a vehicle and an associated vehicle includes an airbag cushion and a tether. The airbag cushion is installed at one side of the seat and is composed of a plurality of chambers. When the airbag is deployed, the airbag cushion extends to the front side of the seat, and the plurality of chambers are continuously provided in the up-down direction of the seat. The tether connects the plurality of chambers to each other or one chamber to a vehicle body. The plurality of chambers include a normal chamber disposed at a front side of the seat and a restricted chamber bent toward a passenger when deployed. The confinement chamber is pressed by an adjacent normal chamber, or pulled or pressed by a tether. Accordingly, the front half of the confinement chamber is folded toward the rear half of the confinement chamber, thereby coming into close contact with the passenger.

Description

Airbag for a vehicle and associated vehicle

Technical Field

The present invention generally relates to an airbag for a vehicle.

Background

In general, recent vehicles are generally equipped with various types of airbags installed at different locations to protect passengers. In such an airbag, a side airbag is required to satisfy a tilt test of european NCAP standard or american NCAP standard and protect passengers seated in various postures, particularly in an autonomous vehicle (unmanned vehicle).

In the case of a side collision or a tilt collision, it is necessary to protect the head of the passenger by preventing the body of the passenger from moving forward or laterally, that is, by preventing the driver and the passenger in the front seat from colliding with each other or the vehicle body.

Also, when an autonomous vehicle in which a passenger lies down or stretches out to lie on the four limbs on a seat that is reclined or a fixed seat belt is seated on the seat is impacted, it is necessary to prevent the neck from being injured by the seat belt and to safely protect the passenger in any sitting posture. Therefore, there is a need for a side airbag that can meet the above requirements.

The foregoing is intended only to aid in understanding the background of the invention and is not intended to represent that the invention falls within the scope of the relevant art as known to those skilled in the art.

Disclosure of Invention

Embodiments of the present invention relate to an airbag for protecting an occupant in the event of a side collision. Certain embodiments relate to an airbag for a vehicle, which can protect a passenger in various situations regardless of the seating posture of the passenger, thereby accommodating a recent collision mode that is newly applied to a recent vehicle or introduced into an autonomous vehicle. For example, an airbag for a vehicle can protect an occupant in the event of a side collision or a tilt collision of a general vehicle or any collision of an autonomous vehicle.

According to one embodiment, the present invention provides an airbag for a vehicle. The airbag includes an airbag cushion, which is located at one side of the seat and is composed of a plurality of chambers, and when the airbag cushion is deployed, the airbag cushion extends to the front side of the seat. The plurality of chambers are arranged in series in the up-down direction of the seat in the deployed state. Tethers connect the chambers to each other or one chamber to the vehicle body. The plurality of chambers include a normal chamber disposed at a front side of the seat and a limiting chamber bent toward a passenger seated on the seat when unfolded. The limiting chamber is pressed by a normal chamber or a tether or pulled by the tether so that a front half of the limiting chamber is folded toward a rear half and is in contact with the passenger.

The tether may be disposed on one surface of the confinement chamber, the surface being on an opposite side of the occupant. The limiting chamber is pressed by the tether such that a front half of the limiting chamber is folded toward a rear half of the limiting chamber, thereby coming into contact with a passenger when the airbag cushion is deployed.

The airbag cushion may include an upper chamber, a middle chamber, and a lower chamber; the upper chamber and the lower chamber may correspond to the normal chamber; and the middle chamber may correspond to the confinement chamber.

The tether may connect the upper chamber and the lower chamber so as to limit a distance between the upper chamber and the lower chamber when the airbag cushion is deployed, such that the middle chamber and the upper chamber are pressed by the lower chamber to be bent toward a passenger.

The tether may connect the upper chamber and the lower chamber, and the tether may press a surface of the middle chamber, the surface being on an opposite side of the passenger, such that the middle chamber is curved toward the passenger.

The upper chamber may be provided with a first through hole and the lower chamber may be provided with a second through hole. The tether may be installed such that a first end of the tether is fixed to the seat or the airbag cushion, and a second end of the tether extends to a front side of the seat, then passes through the first through hole, then extends downward along a surface of the middle chamber disposed at an opposite side of the passenger, then passes through the second through hole, then extends to a rear side of the seat, and finally is fixed to the seat or the airbag cushion.

The upper chamber may be provided with a third through hole disposed in front of the first through hole. The tether may sequentially pass through the first through hole, pass through the third through hole, extend downward and pass through the second through hole.

When the airbag cushion deploys, the distance between the upper chamber and the lower chamber is limited by the tether, and therefore, the middle chamber is not displaced further away from the occupant.

When the airbag cushion is fully inflated, the upper end of the upper chamber and the lower end of the lower chamber are inclined toward the passenger to support the passenger.

The airbag cushion may include an upper chamber, a middle chamber, and a lower chamber; the upper chamber may correspond to the confinement chamber. The middle chamber and the lower chamber may correspond to the normal chamber.

The upper chamber may extend to the front side of the seat such that a front portion of the upper chamber is disposed forward of the passenger's neck when the airbag is fully inflated.

A tether may be installed inside the upper chamber such that the upper chamber is pulled by the tether, and thus the passenger is restrained on the seat when the airbag cushion is deployed.

A safety belt may be installed to be located between the upper chamber and the middle chamber, thereby preventing the safety belt from tightly fastening the neck of the passenger.

The seat may be provided with airbag cushions at both sides thereof, respectively. When the airbag cushion is fully inflated, the upper chamber of the airbag cushion, the front portion of which is disposed in front of the neck of the passenger, extends to the front side of the seat, and the ends of the upper chamber of the airbag cushion contact each other.

The airbag may further include a tether connected to an upper end of the seat; the tether may be provided with a tensioner, wherein when the airbag cushion is fully inflated, the confinement chamber may be brought into close contact with the passenger due to the tether and the tensioner, thereby preventing the passenger from moving forward.

As described above, the airbag for a vehicle according to the present invention can secure safety protection of an occupant by preventing the occupant from moving forward or laterally. That is, in the case of a side collision or a tilt collision, the airbag protects the head of the passenger by preventing a collision between the driver and the passenger seated in the front seat or a collision between the driver or the passenger and the vehicle body.

The airbag of the present invention can prevent a neck injury or strangulation caused by a seat belt and protect a passenger in a sitting and supine posture when an accident of an autonomous vehicle occurs in a state where a driver or passenger lies on a seat that is reclined or a fixed seat belt is seated on the seat.

Drawings

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic view showing an airbag cushion of an airbag for a vehicle according to a first embodiment of the invention;

fig. 2 to 6 are views showing the deployed state of the airbag cushion of fig. 1 under various conditions;

fig. 7 is a schematic view showing an airbag cushion of an airbag for a vehicle according to a second embodiment of the invention; and

fig. 8 to 10 are views showing the deployed state of the airbag cushion of fig. 7 under various conditions.

Detailed Description

Hereinafter, an airbag for a vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic view showing an airbag cushion 200 of an airbag for a vehicle according to a first embodiment of the invention; fig. 2 to 6 are views showing the deployed state of the airbag cushion 200 of fig. 1 under various conditions; fig. 7 is a schematic view showing an airbag cushion 200 of an airbag for a vehicle according to a second embodiment of the invention; and fig. 8 to 10 are views showing the deployed state of the airbag cushion 200 of fig. 7 under various conditions.

The airbag for a vehicle according to the first embodiment of the present invention includes an airbag cushion 200 and a tether 300. The airbag cushion 200 is installed on one side of the seat 100 and is composed of a plurality of chambers. When the airbag cushion 200 is deployed, the airbag is extended to the front side of the seat 100, and the deployment chambers are continuously provided in the up-down direction of the seat 100. The tether 300 connects one chamber to another or to the vehicle body. The plurality of chambers include a normal chamber N which is deployed forward and a limiting chamber a which is bent and extended toward a passenger when deployed. The limiting chamber a is pressed by the normal chamber N adjacent to the limiting chamber a or the limiting chamber a is pulled by the tether 300, so that the front half of the limiting chamber is folded toward and brought into close contact with the passenger.

The airbag of the present invention includes an airbag cushion 200, an inflator 400 for introducing gas into the airbag cushion 200, a tether 300 pulling the airbag cushion 200, and a vent hole.

The airbag cushion 200 is installed on one side surface of the seat 100 and is composed of a plurality of chambers. When the airbag is deployed, the airbag cushion 200 is stretched to the front side of the seat 100, and a plurality of chambers are continuously provided along the up-down direction of the seat 100. Specifically, the chambers deployed in front of the seat 1 include a normal chamber N and a restricted chamber a. The confinement chamber a is pressed by the adjacent normal chamber N or pulled or pressed by the tether 300. Therefore, the front half of the chamber is folded toward the rear half of the chamber to be in close contact with the passenger, thereby restraining the passenger on the seat.

According to the first embodiment of the present invention, the airbag cushion 200 is constituted by three chambers. Specifically, the airbag cushion 200 includes an upper chamber 210, a middle chamber 230, and a lower chamber 250. However, the number of chambers may vary depending on the environment or design.

The airbag cushion 200 includes a tether 300 that pulls the chamber toward the occupant, thereby restraining the occupant to the seat. The tether 300 is disposed on one surface (the opposite side surface of the passenger) of the confinement chamber a. Therefore, when the airbag cushion 200 is deployed, the limiting chamber a is pressed by the tether 300 and thus folded, so that the front half portion of the limiting chamber approaches and comes into contact with the passenger. Specifically, tether 300 connects upper chamber 210 and lower chamber 250. Accordingly, when the airbag cushion 200 is deployed, the tether 300 limits the distance between the upper chamber 210 and the lower chamber 250, so that the middle chamber 230 is pressed by the upper chamber 210 and the lower chamber 250. Thus, the middle chamber is curved toward the passenger.

A tether 300 connects the upper chamber 210 with the lower chamber 250, and the tether 300 presses one surface (i.e., the opposite side surface of the passenger) of the middle chamber 230. Thus, the middle chamber 230 is bent toward the passenger. More specifically, the upper and

lower chambers

210 and 250 are provided with first and second through

holes

310 and 350, respectively. The tether 300 is installed such that a first end of the tether is fixed to the seat 100 or the airbag cushion 200, and a second end of the tether extends first to the front side of the seat, then passes through the first through hole 310, then extends downward along the surface of the middle chamber 230, then passes through the second through hole 350, then extends to the rear side of the seat, and finally is fixed to the seat 100 or the airbag cushion 200.

According to the second embodiment, the upper chamber 210 is provided with the third through hole 330 disposed in front of the first through hole 310, and the tether 300 is installed such that the second end of the tether passes through the first through hole, then passes through the third through hole, then extends downward, then passes through the second through hole 350, and finally is fixed to the seat. According to this embodiment, when the airbag cushion 200 is deployed, the middle chamber 230 is bent toward the passenger, thereby restraining the passenger on the seat.

In addition, when the airbag cushion 200 is deployed, the distance between the upper chamber 210 and the lower chamber 250 is limited by the tether 300, and the middle chamber 230 is not displaced further away from the passenger. In particular, when the airbag cushion 200 is fully inflated, the upper end of the upper chamber 210 and the lower end of the lower chamber 250 are inclined toward the passenger to support the body of the passenger.

One side surface of the airbag cushion 200 is provided with an inflator 400. The inflator 400 is disposed under the seat and installed to stand in the up-down direction of the vehicle. Therefore, the airbag cushion 200 has a compact structure. The airbag cushion 200 is also provided with a vent hole (not shown) that communicates the inside and outside of the airbag cushion 200 with each other. The location and type of the inflator 400 and vent holes may vary depending on the environment and design. Since the inflator 400 and the vent hole are essential elements of the airbag, the existing inflator and vent hole may be applied to the airbag of the present invention. Therefore, a detailed description of the inflator 400 and the vent hole will be omitted.

The airbag of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in fig. 2, the airbag of the present invention is disposed between the driver seat and the passenger seat. The airbag cushion 200 includes an upper chamber 210, a middle chamber 230, and a lower chamber 250. The upper and

lower chambers

210 and 250 correspond to the normal chamber N, and the middle chamber 230 corresponds to the limiting chamber a. Therefore, when the airbag cushion 200 is deployed, the front half of the middle chamber 230, which serves as the restraining chamber a, is bent toward the passenger, thereby coming into close contact with the passenger to restrain the passenger on the seat. Therefore, in the case of a side collision or a tilt collision, the passenger can be prevented from being injured by the collision with the vehicle body.

The middle chamber 230 serving as the confinement chamber a is pulled by the tether 300, thereby maintaining the distance between the upper chamber 210 and the lower chamber 250. Therefore, the middle chamber 230 restrains the shoulders of the passenger on the seat first at an early stage and then restrains the shoulders and arms of the passenger, and the upper chamber 210 restrains the head of the passenger so that the head cannot move laterally. The middle compartment 230 may be supported by a self-supporting tether 300.

When the airbag cushion 200 is fully inflated, the upper end of the upper chamber 210 and the lower end of the lower chamber 250 are inclined toward the passenger, thereby supporting the shoulder and head of the passenger. Therefore, the middle chamber 230 can effectively support the body of the passenger and restrain the passenger on the seat. Therefore, the airbag according to the present invention can effectively protect the passenger. When the middle chamber 230 is fully inflated, the front portion of the middle chamber protrudes more toward the passenger than the rear portion thereof, thereby effectively protecting the passenger.

Fig. 3 shows a state where a driver and a passenger are seated in the driver seat and the passenger seat, respectively. Fig. 3 differs from fig. 2 in that not only the driver seat but also the passenger seat is occupied. Typically, the driver seat and the passenger seat are relatively close to each other. Therefore, when an accident occurs, it is difficult to avoid a collision between the driver and the passenger. However, according to the present invention, since the airbag of the present invention is provided to provide a barrier between the driver and the passenger, the head of the driver can be prevented from colliding with the head of the passenger. Also, even when the driver drives in a seated posture in an appropriate posture, for example, when the driver drives with his arm on the armrest console, as shown in fig. 2 and 3, since the front portion of the airbag cushion 200 is divided into a plurality of chambers, the air pressure of the airbag cushion 200 is distributed to the plurality of chambers. Therefore, the pressure applied to the passenger (i.e., the driver) is also distributed, thereby more reliably ensuring the safety of the passenger.

Fig. 4 and 5 show a side free collision mode in a general vehicle or an autonomous vehicle equipped with the airbag of the present invention. The airbag of the present invention is installed between the vehicle door 500 and the passenger, that is, between the vehicle door 500 and the side of the seat 100. When a collision is detected by a sensor (not shown) installed at one side of the vehicle body, the airbag cushion 200 of the airbag between the vehicle door 500 and the passenger is rapidly inflated such that the upper chamber 210, the middle chamber 230, and the lower chamber 250 push the passenger to the opposite side, thereby increasing a protection area and providing safer protection to the passenger. This situation may be applicable to high-speed side impact collisions.

As shown in fig. 2 and 3, the airbag cushion 200 may be composed of an upper chamber 210, a middle chamber 230, and a lower chamber 250; the upper chamber 210 and the lower chamber 250 may be used as a normal chamber N; and the middle chamber 230 may serve as a confinement chamber a. In this case, when the airbag cushion is fully inflated, the front portion of the middle chamber 230 protrudes more toward the passenger than the rear portion of the middle chamber, thereby providing more safety protection to the passenger.

Fig. 6 shows a state in which a tether 300 connected to the upper end of the seat 100 is added to the state shown in fig. 2 to 5. The tether 300 is provided with a tensioner 130. When the airbag cushion 200 is fully inflated, the chamber a is restricted from moving into close contact with the passenger due to the tether 300 and the tensioner 130, thereby preventing the body of the passenger from moving forward. Tensioner 130 may be an existing tensioner applied to seat belt 110. When the airbag is equipped with the tether 300 and the tensioner 130, the force that restrains the occupant on the seat can be increased. In addition, both sides of the seat 100 may be equipped with airbag cushions 200, respectively.

Fig. 7 is a view showing an airbag cushion of an airbag for a vehicle according to a second embodiment of the present invention, and fig. 8 to 10 show a use example in which the airbag cushion 200 of fig. 7 is applied to an autonomous vehicle. As shown in fig. 7, an airbag for a vehicle according to the present invention is installed between a door 500 and a driver seat 100. The present embodiment is described in a state where the passenger sits on the autonomous vehicle in the supine posture. The airbag cushion 200 includes an upper chamber 210, a middle chamber 230, and a lower chamber 250. The upper chamber 210 is a confinement chamber a, and the middle and

lower chambers

230 and 250 are normal chambers N.

According to the second embodiment, the upper chamber 210 serving as the limiting chamber a extends to the front side of the seat. When the airbag cushion 200 is fully inflated, the front half of the upper chamber 210 is disposed forward of the passenger's neck. The interior of the upper chamber 210 is provided with a tether. Accordingly, when the airbag cushion 200 is deployed, the upper chamber 210 is pulled by the tether 300, thereby restraining the passenger on the seat. In the second embodiment, a safety band 110 mounted on the B filler is disposed between the upper chamber 210 and the middle chamber 230. Therefore, the occupant can be prevented from being caught by the webbing tightly fastened to the neck of the occupant in the event of a vehicle collision.

Also, as shown in fig. 8, two airbag cushions 200 are installed at both sides of the seat 100. When the airbag cushion 200 is fully inflated, the upper chamber 210 of the airbag cushion 200 extends to the front side of the seat 100 to be disposed in front of the passenger, and the ends of the upper chamber 210 contact each other. In this way, the upper chamber may more securely restrain the occupant to the seat, thereby preventing the occupant from moving forward.

Therefore, when the airbag cushion 200 is deployed, the front half of the upper chamber 210 serving as the restraining chamber a is in close contact with the passenger to restrain the passenger on the seat, thereby protecting the passenger. In addition, as shown in fig. 6, a tether 300 is connected to the upper end of the seat 100. The tether 300 is provided with a tensioner 130. The tether 300 and the tensioner 130 may be designed such that the tether 300 and the tensioner 130 bring the confinement chamber a into close contact with the passenger to confine the passenger on the seat, thereby preventing the passenger from moving forward when the airbag cushion 200 is fully inflated.

The airbag for a vehicle according to the present invention can prevent a driver and a passenger from moving forward or laterally, thereby preventing the driver and the passenger from colliding with each other or a vehicle body, and thus protecting the head of the passenger in the event of a side collision or an oblique collision. That is, the airbag may provide safer protection for the vehicle occupant.

In addition, in the case of applying the airbag of the present invention to an autonomous vehicle, when an impact is applied to the vehicle in a state where the driver or passenger lies on a fully reclined seat or when the driver or passenger is wearing the seat belt 110, it is possible to prevent the neck of the driver or passenger from being injured or strangled due to fastening of the seat belt 110. Therefore, the airbag of the present invention provides safety protection for the occupant regardless of the seating posture of the occupant.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. An airbag for a vehicle, the airbag comprising:

an airbag cushion located at one side of a seat and configured of a plurality of chambers that extend to a front side of the seat when the airbag cushion is deployed, the plurality of chambers being continuously provided in a vertical direction of the seat in a deployed state; and

a tether connecting the plurality of chambers to each other or one of the plurality of chambers to a vehicle body,

wherein the plurality of chambers include a normal chamber disposed at a front side of the seat and a limiting chamber bent toward a passenger seated on the seat when deployed, the limiting chamber being pressed by the normal chamber or the tether or pulled by the tether such that a front half of the limiting chamber is folded toward a rear half and is in contact with the passenger,

wherein the airbag cushion includes an upper chamber, a middle chamber, and a lower chamber, wherein the upper chamber, the middle chamber, and the lower chamber are continuously provided in an up-down direction of the seat in a deployed state;

wherein the upper chamber and the lower chamber correspond to the normal chamber; and is

Wherein the middle chamber corresponds to the confinement chamber.

2. An air bag according to claim 1 wherein the tether is provided on one surface of the confinement chamber, the surface of the confinement chamber being on the opposite side of the occupant; and is

Wherein the limiting chamber is pressed by the tether such that a front half of the limiting chamber is folded toward a rear half of the limiting chamber, so that the front half of the limiting chamber is in contact with a passenger when the airbag cushion is deployed.

3. The airbag of claim 1 wherein the tether connects the upper chamber and the lower chamber, thereby limiting a distance between the upper chamber and the lower chamber when the airbag cushion deploys such that the middle chamber and the upper chamber are pressed by the lower chamber to bend toward a passenger.

4. The airbag of claim 1, wherein the tether connects the upper chamber and the lower chamber, and wherein the tether presses against a surface of the middle chamber such that the middle chamber bends toward the occupant, the surface of the middle chamber being on an opposite side of the occupant.

5. An air-bag according to claim 1, wherein the upper chamber is provided with a first through-hole and the lower chamber is provided with a second through-hole; and is

Wherein the tether is installed such that a first end of the tether is fixed to the seat or the airbag cushion, and a second end of the tether extends to a front side of the seat, then passes through the first through hole, then extends downward along a surface of the middle chamber disposed at an opposite side of a passenger, then passes through the second through hole, then extends to a rear side of the seat, and finally is fixed to the seat or the airbag cushion.

6. An air bag according to claim 5, wherein the upper chamber is provided with a third through hole provided in front of the first through hole; and is

The tether sequentially penetrates through the first through hole, the third through hole, the second through hole and the third through hole, and extends downwards.

7. The airbag of claim 1 wherein a distance between the upper chamber and the lower chamber is limited by the tether when the airbag cushion deploys, and therefore, the middle chamber is not displaced further away from the occupant.

8. The airbag of claim 1, wherein an upper end of the upper chamber and a lower end of the lower chamber are inclined toward the passenger to support the passenger when the airbag cushion is fully inflated.

9. An airbag for a vehicle, the airbag comprising:

an airbag cushion located at one side of a seat and composed of a plurality of chambers, the airbag cushion extending to a front side of the seat when the airbag cushion is deployed, the plurality of chambers being continuously provided in an up-down direction of the seat in a deployed state; and

wherein the plurality of chambers include a normal chamber disposed at a front side of the seat and a limiting chamber bent toward a passenger seated on the seat when deployed, the limiting chamber being pressed by the normal chamber or the tether or pulled by the tether such that a front half of the limiting chamber is folded toward a rear half and is in contact with the passenger, wherein the airbag cushion includes an upper chamber, a middle chamber, and a lower chamber, wherein the upper chamber, the middle chamber, and the lower chamber are continuously disposed in an up-down direction of the seat in a deployed state;

wherein the upper chamber corresponds to the confinement chamber; and is provided with

Wherein the middle chamber and the lower chamber correspond to the normal chamber.

10. An air-bag according to claim 9, wherein the upper chamber extends to the front of the seat such that when the air-bag is fully inflated, the front of the upper chamber is disposed forward of the neck of the occupant.

11. The airbag of claim 9, wherein the tether is mounted inside the upper chamber such that the upper chamber is pulled by the tether, and thus the occupant is restrained on the seat when the airbag cushion deploys.

12. An air bag according to claim 9, further comprising a seat belt mounted between the upper chamber and the middle chamber, thereby preventing the seat belt from tightly securing the neck of a passenger.

13. The airbag of claim 9, wherein the airbag cushion comprises a first airbag cushion;

wherein the airbag further comprises a second airbag cushion at a second side of the seat; and is provided with

Wherein, when the first and second airbag cushions are fully inflated, the upper chambers of the first and second airbag cushions extend to the front side of the seat, the front portion of the upper chambers is disposed in front of the neck of the passenger, and the ends of the upper chambers of the first and second airbag cushions contact each other.

14. The air bag according to claim 1, further comprising the tether connected to an upper end of the seat, the tether being provided with a tensioner, wherein when the air bag cushion is fully inflated, the confinement chamber is brought into close contact with the passenger due to the action of the tether and the tensioner, thereby preventing the passenger from moving forward.

15. A vehicle, comprising:

a seat;

a first airbag cushion located at one side of the seat, the first airbag cushion being configured of a plurality of chambers, the first airbag cushion extending to a front side of the seat when the first airbag cushion is deployed, the plurality of chambers being continuously provided in an up-down direction of the seat in a deployed state; and

a tether connecting the plurality of chambers to each other or connecting one chamber to a vehicle body,

wherein the plurality of chambers include a normal chamber disposed at a front side of the seat and a limiting chamber bent toward an occupant seated on the seat when deployed, the limiting chamber being pressed by the normal chamber or the tether or pulled by the tether such that a front half of the limiting chamber is folded toward a rear half and is in contact with the occupant,

wherein the first airbag cushion includes an upper chamber, a middle chamber, and a lower chamber, wherein the upper chamber, the middle chamber, and the lower chamber are continuously provided in an up-down direction of the seat in a deployed state;

Wherein the middle chamber corresponds to the confinement chamber.

16. The vehicle according to claim 15, further comprising a second airbag cushion on a second side of the seat, the second airbag cushion being constituted by a plurality of chambers, the plurality of chambers of the second airbag cushion being arranged in series in an up-down direction of the seat in a deployed state.

17. The vehicle of claim 16, wherein the first and second airbag cushions each include an upper chamber, a middle chamber, and a lower chamber; and is provided with

Wherein, when the first and second airbag cushions are fully inflated, the upper chambers of the first and second airbag cushions extend to the front side of the seat, the front portions of the upper chambers of the first and second airbag cushions are disposed in front of the neck of the passenger, and the ends of the upper chambers of the first and second airbag cushions contact each other.